Powering Up Hsd Transceivers - EMS HSD series User Manual

HSD Aeronautical Transceivers

Powering up HSD transceivers

HSD aeronautical transceivers are typically powered up
when the aircraft crew activates the avionics systems.
System readiness
HSD transceivers need Inertial Reference System (IRS)
navigational data to operate. The avionics systems must be
powered on and warmed up before the HSD is
system-ready.
With all avionics systems ready, HSD transceivers only
require a minute to warm-up. Dial tone, heard through a
handset, indicates that the HSD transceiver is ready for use.
HSD transceivers automatically perform the following
functions:
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Select a satellite
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Select a Spot Beam
•
Select a Land Earth Station (LES)
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Log-on (register)
•
Control satellite and Spot Beam handovers
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